Auxiliary Tank/Toolbox Combo

 Aluminum Tank Industries Auxiliary Tank & Toolbox Combo

Maximize utility with the Aluminum Tank Industries auxiliary tank and toolbox combo—a smart, space-saving solution for truck owners who refuse to choose between fuel capacity and gear storage. These DOT-approved aluminum tanks combine extended fuel range with a lockable toolbox, offering rugged reliability for work sites, road trips, and everywhere in between.

Crafted from high-strength aluminum, each combo unit resists corrosion and harsh weather while maintaining a sleek, professional finish. The integrated design allows for efficient fuel transfer—via gravity-fed or pump-assisted systems—while the spacious toolbox keeps tools, tie-downs, and gear protected under lock and key. Whether you're managing a fleet or taking on solo jobs, this all-in-one solution keeps your truck organized, fueled, and mission-ready.

With install kits that allow tanks to connect directly to your trucks existing fuel system. This tank meets all FHWA (Federal Highway Administration) requirements, which allows the tank to be plumbed directly to your existing trucks fuel system. This unique system connects the auxiliary tank to the factory tank via the factory filler. The auxiliary tank keeps the factory tank full. When the auxiliary tank is empty your factory fuel gauge will move off the full mark. The system installs quickly and easily. No wires or switches to install. The system has rollover protection on the tank and on the factory fill neck adapter.